How to use Location Manager in WPL

Please check the following screenshot:

For enabling/disabling countries, you can click on the "Show all countries" button to view all countries available.

By clicking on the '+' button near the top left of the screen, you can add new locations in the selected location level (country level, state level, city level, etc). For example, you can insert new countries in the country view and new states in the state view.